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 Tornadoes form by hot and cold air meeting each other and start to chase around in a circle, forming a vortex. http://www.lbtsfire.com/Images/tornad o1.gif

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 The scale that measures the length and width of tornadoes is called the Pearson Scale.  Tornadoes that are measured by speed is called the Fujita Scale. http://www.inewscatcher.com/timag es/822156d856a1b7026818fa54659c255 e.jpg

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 Tornadoes usually occur in a place called Tornado Alley. Tornado Alley is in Oklahoma City, Oklahoma.  http://castle- kaneloon.tripod.com/images/ALFALFA.jpg

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 Since 1925, tornadoes have killed over 9,000 people in the U.S.  F5 is the most powerful tornadoes and only two occur per year.  F6 tornadoes are possible, but nobody has ever observed them.  Two things that make a tornado violent are the Jet Stream and the Coriolis Effect.  The tornado is a spinning column of air. http://www.google.com/imgres?imgurl=http://www.armageddononline.org/images/tornado -twister-disasters.jpg&imgrefurl=http://www.armageddononline.org/natural- disasters.html&usg=__BEzH- cpagVdPcU9JX5v2lPARFEk=&h=600&w=800&sz=35&hl=en&start=53&zoom=1&itbs=1&tbnid= _- dLqYjhR3N63M:&tbnh=107&tbnw=143&prev=/images%3Fq%3Dtornadoes%26start%3D40%26h l%3Den%26sa%3DN%26rlz%3D1T4ADBF_enUS342US354%26ndsp%3D20%26tbs%3Disch:1%26 prmd%3Dinbv

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 Did you know, from a distance, a tornado looks like an ice cream cone? http://jeffatwood.typepad.com/atwoodzo o/images/menu_ice_cream_cone.jpg http://weathersavvy.com/tornado10.jpg

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